package org.example.SingletonPattern;

/**
 * 单例模式的实现方式: 懒汉式，线程不安全
 */
public class Singleton1 {
    private static Singleton1 instance;
    private Singleton1(){}
  
    public static Singleton1 getInstance() {
        if (instance == null) {  
            instance = new Singleton1();
        }  
        return instance;  
    }  
}